is calling for his immediate release. >> vice president joe biden begins a delicate diplomatic mission today. he is due to arrive in japan, hoping to ease tensions in his bitter dispute with china. biden is looking to finalize a trade pact. he will make stops in china and south korea. >> the federal health care web sigh has relaunched. the white house said it is different from when it first opened up to the public. we explain more about how the website is working now. >> for starters, the obama administration met its deadline over the weekend and now says the website is working more than 90% of the time, up significantly from only 40% when it first launched. president obama's special advisor in charge of fixing the site said it is night and day from where it was on october 1. the site has a lower error rate of fewer than 1% and enough capacity to handle 50,000 visitors at once. if it's too busy, there is a virtual waiting room that will email you when it's less crowded. republicans talked about how obamacare is a problem for americans, while democrats focused on the dramatic progress o